EXPLANATION OF THE FIGURES. 



PLATE XII. 



Fig. I. Seed of Oroxylum indicum. X $. 



(a), membranous wing developed from the testa ; (fi), the embryo 



enveloped in the testa. 

 2. Embryo of Oroxylum indicum extracted from the seed. X \. 



(a), radicle ; ($), lower surface of one cotyledon, its upper surface 



being placed flat against that of the opposite cotyledon, which is not 



visible in the drawing. The plumule also is not visible. 

 3. Young seedling of Oroxylum indicum. (a), (5), the two cotyledons with 



their upper surfaces separating from each other ; (c), the hypocotyl ; 



(<Z), primary root ; (c), secondary lateral roots. X \- 

 4. The same at a later stage ; (/), the minute terminal bud of the stem, 



otherwise letters as before. X T* 

 5. The same at a still later stage; (^), the first pair of foliage leaves; A, 



the epicotyl, otherwise letters as before. X T. 

 The root not shown. 



